Motor or pump



Feb. 17, 1948.

F. A. Boo'nl MOTOR OR PUMP Filed March 15', 1946 2 sheets-sheet 1 lnx.4

Feb. 17, 1948. F. A. BOOTH Mo'ron on PUMP Filed March 15, 1946 2 Sheets-Sheet 2 GNN.

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` Application March 15, 1948, Serial No. 654,737

i 2 Claims. (Cl. 103-141) The invention aims to provide a new and improved rotary machine which may be constructed i'or use either as a fluid pump or as a motor. and one which will facilitate the eifective use of a iluid in transmitting power. For example. for

-the transmission of power from a-motor to a machine to be driven, one unit, acting as a pump. may be driven by said motor, and another unit, acting as a motor and connected with the machine to be driven, may be actuated by the fluid pumped by the pump unit, and the fluid exhausted from said motor unit may be continuously returned to said pump unit for repumping back to said motor unit. The iluid may be any that is suitable, preferably air laden withoil i'or lubrication and water for cooling.

Figure 1 of the accompanying drawings is a vertical sectional view substantially on line i-I of Fig. 2, the rotor and the vanes being shown in elevation and all of the vane bearings except two being shown in elevation.

Figure 2 is a transverse section on line 2 2 of Fig. 1, the vanes being in elevation.

Figure 3 is a sectional view as indicated by line 3 3 of Fig. 1, the rotor and vanes, however, being in elevation.

Figure 4 is a view similar to Fig. 3 but showingthe vanes moved to different positions in the zigzag channel in which they travel.

Figure 5 is a detail sectional view on an enlarged scale, showing one of the seals which are used on the diverging edges of the vanes.

For purposes of explanation, the casing of the machine will be hereinafter referred to as the stator, yand the vane-carrying member as the rotor, but the machine could well be so constructed that the reverse would be true. Therefore. the terms rotor and stator are to be rconsidered as relative rather than limiting.

Moreover, while the construction disclosed in the drawings will be speciilcally described, attention is invited to the possibility of making various changes within the scope of the invention as claimed.

A rotor disk 6 is shown having a hub 1 suitably keyed to a shaft 8 mounted in appropriate bearings 9. When the machine is constructed for use as a pump, this shaft 8 will be suitably power driven but in a turbine structure, said shaft will be driven by the. rotor for use in performing any desired work. -For purposes of description, it will be considered that the structure disclosed constitutes a turbine.

The rotor disk 6 is formed with radial slots Il which open through its peripheral edge II,

2 each slot I 0 being provided with ilat parallel side walls at right angles to the plane in which said rotor disk 6 is rotatable. Pistons or vanes I! extend through the slots I0 for movement transversely of the planeof rotation oi the rotor disk 6 and each vane is so mounted that it may move from a position in which it projects laterally from one side of the rotor disk, to a position in which it projects laterally from the other side of said disk. Here compare the upper and lower portionsV of Fig. 2, and see also Figs. 3 and 4. The inner end of each vane I2 is provided with trunnions I3 which may well be formedby the ends ,of pins extending through said vanes. These trunnlons I3 are rockably mounted in openings of rectangular bearing blocks I4 and these blocks are seated tightly in rectangular notches II formed in the iront and rear walls of the slots I0, said notches opening through the ilat sides of the rotor disk 6. The bearing blocks I4 completely fill the notches I5 and have iiat outer sides flush with the nat sides oi the rotor disk 6. This mounting means for the vanes I2 insures that said vanes may be easily connected with the disk during assembly of the machine and that they may be easily removed when making repairs. and provides for swinging of said vanes to and from the above-mentioned laterally projecting positions.,

Each vane I2 is Vformed with an arcuate edge I6 concentric with the axis of its trunnions IJ, and with two additional edges il which diverge from the vane pivot to the ends of said arcuate edge I6. The vanes extend entirely to the peripheral edge II of the rotor disk 6, and said edge I I is transversely curved in conformity with the curvature of the arcuate edges I6 oisaid vanes, said edges II and It being equidistant from the axis of the rotor disk'.

A casing or stator I8 is provided and may well have suitable feet I9 to be secured to an appropriate base or the like. 'This stator is'formed with a circumferentially extending channel 2l (see more particularly Figs. 3 and 4) in which the vanes I2 travel as the rotor disk 6 rotates,

said channel 20 being of zigzag form to alternately swing each vane from a position in which it projects laterally from one side of said rotor disk to a position in which it projects laterally from the other side of said rotor disk. This rotor disk 6 and the channel 20 are cooperable in forming two circumferential series oi chambers at opposite sides of said rotor disk. In Figs. 3 and 4, the chambers at one side of the rotor disk Il are shown at 2l, and those at the I assess port 23 is provided. The ports 22 communicate with a huid-receiving chamber 2l within the central portion of the stator Il, and a suitable iluid inlet 25 is provided for said chamber. The discharge ports 23 communicate with a continuous chamber 26 within the peripheral portion of the stator I8, and a suitable fluid outlet 2l is provided for said chamber 26. VThe portion of the rotor disk 6 immediately surrounding the hub 1, is suitably apertured at 2l to permit the passage of iluid from one side of the chamber 2l to the A other side.

The channel 20 has a peripheral wall 29 which is concentric with the axis of the rotor disk C and contacts with the peripheral edge H of said rotor disk. The wall 2s also contacts with the arcuate edges i6 of the pistons i2, and said wall 29 is transversely curved in conformity with the curvature of said arcuate edges Il. The channel 2D is .also provided with opposed circumferential `side walls 39 which contact with the diverging piston edges Il, and portions of these side walls contact with the flat outer sides of the bearing blocks I4 to prevent them from moving laterally in the notches l5. These side walls 39 also contact with opposite sides of the rotor disk 8 be-V tween the chambers 2| and between the chambers 2| a, as indicated at 3| in Figs. 3 and 4, and said side walls S are twisted alternately in opposite directions to remain in contact with the aforesaid diverging vane edges I1 as the vanes l2 swing alternately in opposite directions.

As to operation, fluid entering the chambers 2| and 2| a through the inlet ports 22, acts against the vanes I2 and causes rotation of the rotor disk 6, and the fluid which has acted on any vane, is exhausted through the proper port 23 by means of the next following vane. 'I'he machine may be readily reversed by admitting fluid under pressure at 21 (Fig. 2) and-exhausting the fluid at 25 (same view).

Suitable fluid-tight seals are provided wherever necessary. Two sealing rings are shownat 32 in Fig. 2, carried by the stator is and contacting with opposite sides of the rotor disk 6 between the slots i9 and the openings 28. Arcuate seals 33 are shown for the arcuate edges I6 of the vanes I2, and other seals 34 are provided for the diverging edges Il of vanes.y All of the seals may be spring-pressed outwardly, and aspring for this purpose is indicated at 35 in Fig. 5. In order that the seals 34 and the vane edges Il can properly follow the zigzag side walls 39 of the continuous chamber 20, said seals and edges are suitably beveled as shown at 36 and 3l. Suitable seals 38 are shown for the peripheral edge li of the rotor disk 6 and a packing-box is shown at 39 for the shaft 8, said packing box being carried by one side of the stator Il. The other side of this stator may well be provided with a removable plate 40 for giving access to a nut 4| securing the rotor hub 1 on the shaft 8.

From the foregoing taken in connection with the accompanying drawings, it will be seen that novel and advantageous provision has been made for carrying out the objects of the invention, and while preferences have been disclosed, attention 4 isagaininvitedtothepossibilityofmakingvariationliziilhin the scope oi' the invention as claimed.

l. A machine of the class described comprising a rotor having radial slots therethrough. a piurality of vanes extending through said slots for movement transversely of the plane of rotation of said rotor, a stator having a circumferentially extending channel in which said vanes travel as said rotor rotates, said channel being of zigzag form to alternately shift each vane from a position in which it projects laterally from one side of said rotor to a position in which it projects laterally from the other side of said rotor, said rotor and channel being cooperable in forming two circumferential series of chambers at opposite sides of said rotor, the chambers at one' side of said rotor being in staggered relation with those at the other side thereof. each of said chambers being gradually decreased in width from its intermediate portion to its ends, said stator having two fluid-conducting chambers surrounded by the aforesaid circumferentially extending channel and disposed at opposite sides of said rotor, said stator having a fluid conductor from its exterior to one of said two iiuid-conducting chambers, said rotor having fluid-conducting ports placing said two fluid-conducting chambers in communication with each other, said stator having radial duid-conducting ports placing said fluid-conducting chambers in communication with one end of the chambers of said two circumferential series, said stator having fluid-conducting ports communicating with the other end of said chambers of said two circumferential series, and also having a manifold communicating with the last mentioned ports.

2. In a machine of the class described. a ilatsided rotor disk having a radial slot opening through its peripheral edge and through its ilat sides, the front and rear walls of said slot having opposed rectangular notches at the inner end of said slot and opening through the at sides of said rotor disk, a vane extending through said slot and having trunnions projecting from its inner end, rectangular bearing blocks having openings receiving said trunnions, said bearing blocks being tightly seated in and lling the aforesaid notches and having flat outer sides flush with the fiat sides of said rotor disk, and a stator in which said rotorv disk is mounted, said stator having means cooperable with said vane for performing work and for swinging said vane upon said trunnions during rotation of said rotor disk, said stator having side walls contacting slidably with said at outer sides of said bearing blocks to hold the latter against lateral movement in said notches.

FRANK A. BOOTH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Germany Nov. 21, 1931 

